Adrenal Androgen Biosynthesis with Special Attention to P450c17 a
Adrenal Androgen Biosynthesis with Special Attention to P450c17 a
复制标题
肾上腺雄激素生物合成,特别关注 P450c17 a
DOI:
--
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发表时间:
1995
影响因子:
5.2
通讯作者:
W. Rainey
中科院分区:
文献类型:
--
作者:
J. Mason;I. Bird;W. Rainey
In vitro studies of human adrenal androgen synthesis are limited because of the difficulties in obtaining adrenals. We describe the use of the human adrenocortical tumor H295 cell line as a model to evaluate mechanisms controlling C19-steroid production. The cells were characterized with regard to responsiveness to a variety of agents as measured by steroid secretion and induction of 17 alpha-hydroxylase cytochrome P450 (P450c17) expression, a key enzyme in C19-steroid production. Forskolin and dibutyryl cAMP, which were more effective than ACTH, enhanced the production of DHEA and androstenedione over a 48-hour treatment period. Agents that act by increasing intracellular calcium (angiotensin II and K+ ions) as well as protein kinase A pathway activators (ACTH, forskolin, and dibutyryl cAMP) individually increased the mRNA levels and activity of P450c17. In addition, angiotensin II but not K+ ions attenuated the increased expression promoted by the kinase A agonists. Thus, the complexity of human adrenal P450c17 expression through multiple signaling pathways may contribute importantly to the diverse patterns of human adrenocortical steroidogenesis.
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影响因子:
2.1
作者:
Mason,JI;Carr,BR;Rainey,WE
通讯作者:
Rainey,WE
影响因子:
11.2
作者:
A. Gazdar;H. Oie;C. Shackleton;T. Chen;T. Triche;T. Triche;C. Myers;G. Chrousos;G. Chrousos
通讯作者:
A. Gazdar;H. Oie;C. Shackleton;T. Chen;T. Triche;T. Triche;C. Myers;G. Chrousos;G. Chrousos
DOI:
--
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Zuber,MX;John,ME;Okamura,T;Simpson,ER;Waterman,MR
通讯作者:
Waterman,MR
影响因子:
4.8
作者:
Bird,IM;Mason,JI;Oka,K;Rainey,WE
通讯作者:
Rainey,WE
DOI:
10.1210/jcem.77.3.8396576
发表时间:
1993
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
Rainey,WE;Bird,IM;Sawetawan,C;Hanley,NA;McCarthy,JL;McGee,EA;Wester,R;Mason,JI
通讯作者:
Mason,JI